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大棚内封闭严密,湿度大,温度高,又不通风透气,所以大棚蔬菜一定要选用高效、低毒、广谱、低残留的农药。如果选用农药不当,不仅防治效果不佳,而且污染瓜菜,有害人体,降低商品价值。据试验和实践的材料,评介一批农药,供菜农选用时参考。 一、禁用农药 ①剧毒高残留农药。如3911、1605、1059、甲胺磷、倍硫磷、呋喃丹、草甘膦等。
Strict closed within the greenhouse, humidity, high temperature, ventilation and ventilation, so the greenhouse vegetables must use efficient, low toxicity, broad spectrum, low residual pesticides. If the improper use of pesticides, not only prevention and control of poor results, but also contaminated vegetables, harmful to human health, reduce the value of goods. According to the experimental and practical materials, a group of pesticide reviews for reference of vegetable farmers. First, disable pesticides ① highly toxic pesticide residues. Such as 3911,1605,1059, methamidophos, fenthion, carbofuran, glyphosate and so on.